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R. P. VALENTINE.

FEED WATBRHHEATEB. No. 256,080. Patented Apr. 4, 1882.

WITNESSES: S INVENTOR:

ATTORNEYS.

UNITED STATES PATENT OFFICE.

RICHARD P. VALENTINE, OF BOSTON, MASSACHUSETTS, ASSIGNOR OF ONE-HALF TO PETER OOLLAMORE.

FEED-WATER HEATER.

SPECIFICATION forming part of Letters Patent No. 256,080, dated Apri1 4, 1882.

(No model.)

point which will secure precipitation or foreign matters, and to allow expansion and contraction of the tubes without risk of causing leakage.

To that end my invention consists in the novel construction hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forming part of this specification,

. in which similar letters of reference indicate der of water.

corresponding parts in both the figures.

Figure l is a side elevation of my improved heater, and Fig. 2 is a vertical section of the same.

A is the water-chamber, consisting of a hollow cylinder provided with heads a a.

B is an outer cylinder, forming a jacket around the water-chamber, closed at its ends by heads I) b, on the bottom one of which the cylinder A is separated by legs 0 c.

(J G U are tubes bent in U form; and secured at their ends in the lower head a of the cylinder A.

(I is iheinlet water-pipe, passing through cylinder B to the inner cylinder, and e is the outlet water-pipe extending from the upper end of cylinder A.

fis the exhaust-steam pipe, passing through the bottom of cylinder B, and coupled by a slip-joint to head a of the inner cylinder, so as to communicate with tubes 0 at one end. i is the exit-pipe for steam at the top of cylinder B.

y is the blow-off pipe from the water-cha nber for draining otl' precipitated matter, and h is a drip pipe and cock for relieving cylin- All the pipes are to be provided with stuffing-boxes, to prevent leakage and allow for expansion and contraction.

In operation the steam entering by pipe j rises in the U-shaped tubes 0, and descending in the outer legs enters cylinder B below the water-chamber, from whence it rises naturally in the space between the two cylinders to the discharge-pipe i.

The water entering chamberAby pipe dcomes into intimate contact with the pipes C, and also the surface of the cylinder, which is heated by the steam in thejacket. It is thus possible to heat the water to or above a boiling temperature, at which mineral and other impurities will be precipitated. The water-chamber being entirely inclosed, loss of heat by radiation is avoided. Further, it is to be observed that there being no rigid connection between the two cylinders they are free to expand and contract independently, and the U shape of the pipes allows of their expansion and contraction without loosening the joints. At It on the outer cylinder is ahand-hole plate, covering an opening which gives access to the inside of the outer cylinder and to the mudhole plate of the inner cylinder.

The U-shaped tubes (J will extend to nearly the top of the heater when exhaust-steam is alone used; but in cases when a higher temperature is required in order to settle the impurities in the water, a live-steam coil may be introduced in 'the upper part of the heater, as shown by dotted lines.

Having thus described my'invention, what I claim as new, and desire to secure by Letters Patent, is I Inafeed-water heater, the combination, with the jacket B, provided with the heads I) and the steam-exit pipe *5, the inlet water-pipe d,

and the outlet water-pipe c, of the water-chamher A, provided with the heads a, the feet 0, and'the U-shaped pipesG, having their ends received in the lower head of the said waterehamber, and the exhaustpipe f, passing through the head of the jacket and-coupled by a slip-joint to the head of the said water-cylinder directly under the end of the said tubes, substantially as and for the purpose set forth.

RICHARD P. VALENTINE. Witnesses:

E. J. HADLEY, L. E. CRANE. 

